diff --git a/R/Spectra.R b/R/Spectra.R
index ef987705..b1efc2a2 100644
--- a/R/Spectra.R
+++ b/R/Spectra.R
@@ -1454,7 +1454,7 @@ setClass(
         processingChunkSize = "numeric",
         version = "character"
     ),
-    prototype = prototype(version = "0.2",
+    prototype = prototype(version = "0.3",
                           processingChunkSize = Inf)
 )
 
diff --git a/data/fft_spectrum.RData b/data/fft_spectrum.RData
index c4b47c09..ff880459 100644
Binary files a/data/fft_spectrum.RData and b/data/fft_spectrum.RData differ
diff --git a/vignettes/Spectra-large-scale.Rmd b/vignettes/Spectra-large-scale.Rmd
index 89f96c5e..48f6c4af 100644
--- a/vignettes/Spectra-large-scale.Rmd
+++ b/vignettes/Spectra-large-scale.Rmd
@@ -23,6 +23,7 @@ BiocStyle::markdown()
 
 ```{r, echo = FALSE, message = FALSE}
 library(Spectra)
+register(SerialParam())
 library(BiocStyle)
 ```